Perforator



(No Model.)

2 Sheets-Sheet `1. P. P. RQSBAGK.

PBRFORATOR.

Patented Deo. 13, 1887.

No Model. 2 sheets-sheet 2.

11.1.R0SBAGK- PBRFORATOR.

It I l 5 MMI NIH 'Ml 1522/627 lr, iM/.D @M

N, PETERS.` PhoxoALnhogmpm-r. wnshmgmm o c.

' UNITED STATES PATENT OFFICE.

FREDERICK I. ROSBACK, OF ENGLEVOOD, ILLINOIS.

PERFORATOR.

SPECIFICATION forming part of Letters Patent No. 374,880, dated December'lS, 1887.

Application filed November 10, 1886. Serial No. 218,48). (No model.)

.To @ZZ whom it may concern.'

Be it known that I, FREDERICK I. RosEAoK, a citizen of the United States, residing at Englewood, inthe county of Cook and State of Illinois, have inventeda certain new and useful Improvement in Perforators; andIhereby declare the following to be a full, clear, and exact description of the same.

My `invention relates to the class of devices used for perforating paper to provide divisional lines at which to render separation by tearing easy. These perforations are to be found, among other connections, in sheets of postage-stam ps, in check-books,iecei pt-books, andthe like.

It is my object to provide an improvement upon the construction of perforating imple ments of the kind wherein the perforatingneedles are readily adjusted and removed, or wherein any number of members ofthe series of needles may readily be removed when broken, to permit replacing by the corresponding number of perfect ones.

It is further my object to provide an improvement upon the construction wherein the needles are readily adjusted to perform their perforating function in sets by rendering any desired number of intermittent members of the series of needles yielding,and thus inoperative las perforators; and it is also my object to provide a perforating device of a generally better construction than has hitherto been provided.

My invention consists in the construction hereinafter set forth and claimed.

In the drawings, Figure l is a perspective View of a handperforator provided with 4my improvement; Fig. 2, an enlarged side elevation of my improved needle-bar; Fig. 3, a sectional view taken on the line 8 3 of Fig. 2 and viewed in the direction of the arrows, and Fig. 4 a section taken on the line 4 of Fig. l and Viewed in the direction of the arrow.

A is the base or table of a handperforator. Of course my improvement is not confined to a handperforator, as it is equally useful in connection with foot or power perforators.

B is the body portion, provided with the usual lever, C,witl1 which is connected, in the usual manner, at the socket s, the needle-bar D. On both sides of the device I provide graduated scales r2, which afford great convenience in setting gages rand r' quickly and accurately at any required distance from the line ofperforation.

E is an ad j u'stablc screw-threaded stop on the body B,to control, by stopping thelever C, the depth that the needles F enter the die G' below the stripper G, and thus save wear on both needles and die.

A needle accidentally bent may be removed and a straight one inserted in its place in a very few minutes on removing the bar D, as will be readily understood from the following description of the needle-bar construction.

The needle-bar D comprises, preferably,two angle-bars, p and p,secured together.as shown, to produce a longitudinal recess, o, Fig. 3, t-he purpose of forming the bar in two parts, as described, being to permit ready access to that portion of the angle-bar p containing the needles to counter-sink the perforations, as shown in Fig. 3, through which the needles are inserted, in order to permit the heads t to lie flush with the surface of the bar containing them.

H is the retaining-plate for the needles or needle-stop,which is beveled on its lower edge, and I I are slugs or packing-piecesbeveled, as shown, on their upper sides and inserted into the recess o over the needle-heads t, below the beveled edge of the bar H, which is wedged into the recess o upon the slugs by tightening or forcing inward the screws n, which secure the bar H in position, thereby holding the slugs securely in place.

To remove a defective needle for the purpose of substituting a perfect one in its place, it is only necessary to remove the bar H by unscrewing it and the slugs, the parts being readily and quickly readjustable after the sound needle is inserted into place.

Any desired number of slugs I, of any desired length,1nay be used. If the entire series of needles F is intended to perforate,the slugs are caused to abut against each other, and thus, by affording a continuous layer upon the needle-heads, render the entire series rigid. To produce intermittent sets of perforatingneedles-to provide'whole spaces or continuous lines between the perforations in a sheet, for example-the slugs I are set apart, as shown in Fig. 2, by shifting or sliding them or any IOO of them in the recess o to leave spaces of the desired length, through which the coincident needles rise When the perforator is actuated, the lower edge of the bar H affording a stop to prevent their displacement, and by being rendered thus yielding they fail to perforate, and thus leave the intermissions between the perforated lines produced by the intermittent rigid series of needles.

What I elaim as new, and desi re to secure by Letters Patent, is-

In a perforator, the combination of a needlebar, D, provided with arrecess, 0, a beveled retaining-plate, H, removably secured in the recess, and beveled slugs Ltted in the recess to prevent upward movement of the needles, and adjustable by shifting lengthwise in the recess without removal therefrom to afford a desired number of yielding members in the series of needles, substantially as and for the 2o purpose set forth.

FREDERCK P. ROSBAOK.

In presence of-l J. W. DYRENFORTH, YFRANK L. DOUGLAS. 

